troubleshooting Question

Configure multiple Oracle listeners

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dbadmFlag for Italy asked on
Oracle DatabaseNetworking
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My Oracle version is: Oracle Database 19c EE on Oracle Linux Server 7.9

I've installed 3 Oracle databases single instance on hostname = oracledbsq01, PORT = 1521

[oracle@oracledbsq01]$ cat /etc/oratab


[oracle@oracledbsq01]$ ps -ef | grep -i pmon
oracle    1671     1  0 22:53 ?        00:00:00 ora_pmon_ORCLSDB
oracle    2492     1  0 22:55 ?        00:00:00 ora_pmon_ORCLBDB
oracle    3151     1  0 22:57 ?        00:00:00 ora_pmon_ORCLMDB

[oracle@oracledbsq01 admin]$ ls -ltr
-rw-r--r--. 1 oracle oinstall 1536 Feb 14  2018 shrept.lst
-rw-r-----. 1 oracle oinstall  175 Apr 13 23:48 sqlnet.ora
drwxr-xr-x. 2 oracle oinstall   64 Apr 26 23:24 samples

I need to understand how to Configure multiple Oracle listeners one for each database.

For example I'd like to configure the listener.ora file to have 3 listeners (LISTENER_ORCLSDB, LISTENER_ORCLBDB, LISTENER_ORCLMDB).

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